Guest Gene's link to the Max Hunter site seems to have died, so here it is again . . . .

Pretty Quadroon as sung by Naomi Evans, Rogers, Arkansas on August 13, 1958

PRETTY QUADROON

O, I'll never forget when I met
Sweet Cora, my pretty quadroon
I see her dear eyes shining yet
As I vowed to be true 'neath th moon
Her fawn, was exceedingly fair
Her cheeks like th wild rose, in June
And th ringlets of her dark glossy hair
Would curl to my pretty quadroon

CHORUS:
O, my pretty quadroon
My flower that faded to soon
My hearts like th strings on my banjo
All broke for my pretty quadroon

So happy, were we for awhile
Like th love birds that dwell 'neath th flower
And th sweetness - - - - - - -
Seemed to revel the blush of the flower
But the happiness faded like rose
And before the last - - of the moon
The - - knocked at my door
Took care of my pretty quadroon

Was recorded by the Beverly Hillbillies as well -
5/26/30 (LAE 804-A) My Pretty Quadroon.....Brunswick 441
according to the E Discographer

Also turned up on some movie soundtracks in the 1930s.

Not sure about a source - sounds like a nineteenth century composition, but it could be more recent.